Table 1. Anthropometric and biochemical characteristics of the study population according to glucose tolerance status.

	All	NGT<155	NGT≥155	IGT	P
Variables	(n = 584)	(n = 278)	(n = 146)	(n = 160)
Gender, male/female	322/262	147/131	88/58	87/73	0.338*
Age, years	46.5±9.8	46.3±11.1	46.4±10.1	47.1±6.5	0.698
BMI, Kg/m2	28.5±3.9	28.3±4.2	28.6±3.8	29.1±3.5	0.122
Fasting glucose, mg/dl	93.8±10.9	90.5±9.2	95.2±9.1	98.3±13.1	<0.0001
1-h glucose, mg/dl	153.3±41.2	120.8±22.3	182.2±25.5	183.4±35.4	<0.0001
2-h glucose, mg/dl	122.7±29.2	103.9±19.1	117.5±15.3	160.1±15.7	<0.0001
Fasting insulin, µU/ml	12.2±5.9	10.4±4.1	13.3±5.8	14.5±7.4	<0.0001
1-h insulin, µU/ml	111.2±72.1	88.9±55.7	156.1±95.1	109.9±53.5	<0.0001
2-h insulin, µU/ml	94.4±65.9	60.5±35.5	108.3±61.9	138.5±77.1	<0.0001
MATSUDA index/ISI	68.6±40.7	86.5±42.7	54.8±31.2	50.9±31.6	<0.0001
Total cholesterol, mg/dl	206.1±37.1	205.5±36.7	202.2±34.1	210.5±39.7	0.138
HDL-cholesterol, mg/dl	49.3±11.7	51.1±12.1	47.4±10.2	48.0±11.8	0.002
LDL-cholesterol, mg/dl	130.3±33.3	129.4±32.4	128.2±33.2	133.7±34.9	0.294
Triglyceride, mg/dl	133.1±71.3	126.4±72.4	133.7±68.3	144.2±70.9	0.041
MS, n (%)	271(46.4)	99(35.6)	72(49.4)	100(62.5)	<0.0001*
hs-CRP, mg/L	2.9±1.8	2.2±1.4	3.4±1.8	3.6±1.9	<0.0001
Current smokers, n(%)	170(29.1)	84(30.2)	28(19.2)	48(30.0)	0.037*